| HeⅡ中元激发和色散关系的计算机模拟研究 |
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| 引用本文： | 林德华,杨德智,何光辉,胡炳全,张中卫,邹平. HeⅡ中元激发和色散关系的计算机模拟研究[J]. 低温物理学报, 2006, 28(3): 296-300 |
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| 作者姓名： | 林德华 杨德智 何光辉 胡炳全 张中卫 邹平 |
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| 作者单位： | 重庆大学数理学院,重庆,400044;重庆大学数理学院,重庆,400044;重庆大学数理学院,重庆,400044;重庆大学数理学院,重庆,400044;重庆大学数理学院,重庆,400044;重庆大学数理学院,重庆,400044 |
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| 摘 要： | 液体HeⅡ的色散关系涉及到元激发的类型以及它们之间的相互作用,对液体4He物理性质的解释和实际应用都是至关重要的,因此从理论和实验两个方面展开对它的研究一直是液体4He研究的热点之一.本文采用计算机模拟的方法对液体HeⅡ的元激发和色散关系进行了比较深入的研究,给出了在一定温度范围内色散关系的统一解析表达,并在此基础上计算出自由能以及熵随温度的变化关系,模拟结果与实验数据吻合得很好.
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| 关 键 词： | 液体4He 元激发 色散关系 |
| 收稿时间： | 2005-11-14 |
| 修稿时间： | 2005-11-14 |
THE COMPUTER-SIMULATED RESEARCHES OF THE ELEMENTARY EXCITATIONS AND THE DISPERSION RELATIONS IN HELL |
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| Lin De-Hua,Yang De-ZHi,He Guang-Hui,Hu Bing-Quan,ZHang ZHong-Wei,Zou Ping. THE COMPUTER-SIMULATED RESEARCHES OF THE ELEMENTARY EXCITATIONS AND THE DISPERSION RELATIONS IN HELL[J]. Chinese Journal of Low Temperature Physics, 2006, 28(3): 296-300 |
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| Authors: | Lin De-Hua Yang De-ZHi He Guang-Hui Hu Bing-Quan ZHang ZHong-Wei Zou Ping |
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| Affiliation: | College of Mathematics and Physics, Chongqing University, Chongqing 400044 Received 14 November,2005 |
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| Abstract: | The dispersion relations of HeII is related to the types of elementary excitations and their interactions, which is significant to both the interpretations of physical characters and the practical applications of liquid ~ 4 He. Therefore, one of hot spots in the researches of liquid ~ 4 He is to discuss the dispersion relations both experiments and theoretics. This paper studies the elementary excitations and the dispersion relations of HeII using the computer-simulated method, and obtains the uniform expressions of the dispersion relations in HeII for the certain range. Moreover, based on this expressions, the functions between the free energy along with the entropy and the temperature are figured out. The results are congruent with the experiments. |
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| Keywords: | Liquid~4 He Elementary Excitations Dispersion Relations |
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